纳米BN改性PRTV的电气和疏水特性研究  

Study on electrical and hydrophobic properties of PRTV modified by nano BN

作　　者：高文欣 杜燕 张晶蕊 韦萌根 张博 王洋[1] GAO Wenxin;DU Yan;ZHANG Jingrui;WEI Menggen;ZHANG Bo;WANG Yang(Xi′an Polytechnic University,Xi′an 710048,China)

机构地区：[1]西安工程大学,陕西西安710048

出　　处：《绝缘材料》2024年第7期51-60,共10页Insulating Materials

基　　金：陕西省教育厅专项科研计划(22KJ0497);一般项目-工业领域(2024GX-YBXM521)。

摘　　要：室温硫化硅橡胶(PRTV)是目前电力系统中最常用的防污闪涂料,为了进一步提高PRTV材料的绝缘性能,选用硅烷偶联剂KH570对氮化硼(BN)纳米粒子进行改性,制备了BN/PRTV复合材料,并研究了BN掺杂含量对复合材料电气特性和疏水性的影响规律。结果表明:BN纳米粒子表面成功接枝偶联剂,随BN纳米粒子含量的增加,复合材料断面粗糙度增加且出现乳突结构。BN纳米粒子的引入降低了PRTV材料的介电常数,同时在PRTV内部引入了更多的深陷阱,抑制了电荷脱陷能力,提升了PRTV材料的闪络电压。当BN纳米粒子质量分数为5%时,复合材料的憎水性最佳,闪络电压最高。Room temperature vulcanized silicone rubber(PRTV)material is the most commonly used anti-pollution flashover coating in power system at present.In order to further improve the insulating performance of PRTV material,the boron nitride(BN)nanoparticles was modified by silane coupling agent KH570,and a BN/PRTV composite was prepared.The effects of BN doping content on the electrical properties and hydrophobicity of the composite material were studied.The results show that the surface of the BN nanoparticle is successfully grafted with coupling agent.With the increase of BN nanoparticle content,the section interface roughness of the composite increases and the mastoid structure appears.The introduction of BN nanoparticles reduces the dielectric constant of PRTV material,and introduces more deep traps inside PRTV,which inhibitis the charge detrapping ability and increases the flashover voltage of PRTV material.When the mass fraction of BN nanoparticles is 5%,the hydrophobicity of the composite is the best and the and flashover voltage is the highest.

关 键 词：PRTV 氮化硼纳米粒子 纳米复合涂层 闪络电压 

分 类 号：TM215[一般工业技术—材料科学与工程]